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1. 发明申请

WO2012048975A1 DETERMINING ASYMMETRIES IN A COMMUNICATION NETWORK 审中-公开
标题翻译：确定通信网络中的不对称性
公开(公告)号：WO2012048975A1
公开(公告)日：2012-04-19
申请号：PCT/EP2011/065844
申请日：2011-09-13
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , CAVALIERE, Fabio , RUFFINI, Stefano , BOTTARI, Giulio , GIORGI, Luca
发明人： CAVALIERE, Fabio , RUFFINI, Stefano , BOTTARI, Giulio , GIORGI, Luca
IPC分类号： H04B10/08 , H04J3/06 , H04L12/26
CPC分类号： H04L43/0864 , H04B10/07 , H04B10/0775 , H04B10/0795 , H04B2210/072 , H04B2210/078 , H04J3/0667 , H04J14/0201 , H04J14/021 , H04J14/0226 , H04J14/0267 , H04J14/0273 , H04J14/0275 , H04Q11/0066 , H04Q2011/0083
摘要： A method for measuring asymmetry in propagation delay of first and second links which connect a first node to a second node of a communication network. The method comprises measuring (101) a round trip delay of the first link. The round trip delay can be measured by transmitting (102) a test signal from the first node to the second node over the first link and receiving a reply to the test signal from the second node over the first link. The method further comprises measuring (105) a round trip delay of the second link. The round trip delay can be measured by transmitting (106) a test signal to the second node over the second link and receiving a reply to the test signal from the second node over the second link. A difference in the propagation delay of the first link with respect to the second link is determined (109) using the measured round trip delays of the first link and the second link.
摘要翻译：一种用于测量将第一节点连接到通信网络的第二节点的第一和第二链路的传播延迟不对称的方法。该方法包括测量（101）第一链路的往返延迟。可以通过在第一链路上将测试信号从第一节点发送（102）到第二节点（102）并通过第一链路接收来自第二节点的测试信号的答复来测量往返延迟。该方法还包括测量（105）第二链路的往返延迟。可以通过在第二链路上向第二节点发送（106）测试信号（106）并通过第二链路从第二节点接收对测试信号的回复来测量往返延迟。使用所测量的第一链路和第二链路的往返延迟来确定第一链路相对于第二链路的传播延迟的差异（109）。

2. 发明申请

WO2013068039A1 OPTICAL SUPERVISORY CHANNEL 审中-公开
标题翻译：光学监控通道
公开(公告)号：WO2013068039A1
公开(公告)日：2013-05-16
申请号：PCT/EP2011/069742
申请日：2011-11-09
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , CAVALIERE, Fabio , BOTTARI, Giulio
发明人： CAVALIERE, Fabio , BOTTARI, Giulio
IPC分类号： H04J14/02
CPC分类号： H04B10/0775 , H04J14/0234 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0282
摘要： A supervisory channel is provided on an optical path (31) between nodes of an optical communication network. The nodes are arranged to use a set of wavelengths allocated for carrying traffic channels. An optical signal (16) which carries a supervisory channel is generated at a supervisory channel transmitter (15) and added (12) to the optical path (31) downstream of an optical amplifier (11). The optical signal (16) has a wavelength which is one of the set of wavelengths allocated for carrying traffic. The method is performed at a time when the wavelength is not being used to carry traffic. An impairment parameter of the received optical signal is measured at a supervisory channel receiver (15). The receiver is a coherent receiver and the impairment parameter is chromatic dispersion or polarisation mode dispersion.
摘要翻译：在光通信网络的节点之间的光路（31）上提供监控信道。节点被布置成使用分配用于承载业务信道的一组波长。在监控信道发射机（15）处生成载有监控信道的光信号（16），并将光信号（12）添加到光放大器（11）下游的光路（31）。光信号（16）具有作为分配用于携带业务的一组波长之一的波长。该方法是在波长不用于携带业务的时候执行的。在监控信道接收机（15）处测量所接收的光信号的损伤参数。接收机是相干接收机，损伤参数是色散或偏振模色散。

3. 发明申请

WO2011134507A1 OPTICAL ACCESS NETWORK 审中-公开
标题翻译：光接入网络
公开(公告)号：WO2011134507A1
公开(公告)日：2011-11-03
申请号：PCT/EP2010/055723
申请日：2010-04-28
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , CAVALIERE, Fabio , GIORGI, Luca , D'ERRICO, Antonio , GROSSO, Renato
发明人： CAVALIERE, Fabio , GIORGI, Luca , D'ERRICO, Antonio , GROSSO, Renato
IPC分类号： H04J14/02
CPC分类号： H04J14/0282 , H04J14/0202 , H04J14/0257 , H04J14/0267 , H04J14/0269
摘要： An optical access network (5) comprises L wavelength division multiplexed access sub-networks (10,11,12), where L>2. Each of the wavelength division multiplexed access sub-networks (10,11,12) is arranged to use a set of wavelength channels (λ 1 -λ N ). M optical line termination apparatus (41,42,43), where M>1, each receive traffic from a respective operator network (51,52,53) and output traffic on the wavelength channels. A wavelength routing apparatus (110) comprises M sets of first ports (35) and L second ports (24). Each set of first ports connects to a respective one of the optical line termination apparatus (41,42,43) and each second port connects to an optical link (16) of a respective one of the wavelength division multiplexed access sub- networks. The wavelength routing apparatus (110) is arranged to route the wavelength channels (λ 1 -λ N ) between the sets of first ports (35) and the second ports (24) and to route different wavelength channels of the same wavelength to different ones of the second ports (24).
摘要翻译：光接入网络（5）包括L波分复用接入子网（10,11,12），其中L> 2。波分复用接入子网络（10,11,12）中的每一个被配置为使用一组波长信道（α1-ΔN）。 M光线路终端设备（41,42,43），其中M> 1，各自从相应的运营商网络（51,52,53）接收业务并在波长信道上输出业务。波长路由装置（110）包括M组第一端口（35）和L个第二端口（24）。每组第一端口连接到光线路终端设备（41,42,43）中的相应一个，并且每个第二端口连接到相应的一个波分复用接入子网络的光链路（16）。波长路由装置（110）被布置成在第一端口（35）和第二端口（24）组之间路由波长信道（λ1-ΔN），并且将相同波长的不同波长信道路由到不同的的第二端口（24）。

4. 发明申请

WO2012084274A1 A PASSIVE OPTICAL NETWORK ARRANGEMENT AND METHOD 审中-公开
标题翻译：被动光网络布置和方法
公开(公告)号：WO2012084274A1
公开(公告)日：2012-06-28
申请号：PCT/EP2011/056075
申请日：2011-04-18
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CAVALIERE, Fabio , GIORGI, Luca
发明人： CAVALIERE, Fabio , GIORGI, Luca
IPC分类号： H04J14/02
CPC分类号： H04J14/02 , H04J14/0227 , H04J14/0238 , H04J14/0246 , H04J14/0256 , H04J14/0267 , H04J14/0282
摘要： This disclosure relates to wavelength division multiplexed (WDM) passive optical networks (PON), and the transmission of point-to-point and broadcast or multicast channels from an optical line transmitter (OLT) to an optical network unit (ONU). There is provided a WDM PON (100) comprising: an OLT (105) coupled to a plurality of ONU (110a, 110b) using an optical fibre network (160); the OLT (105) having one or more WDM transceivers (115a, 115b) each arranged to receive multi-cast and point-to-point channels and wherein the or each WDM transceiver (115a, 115b) is arranged to transmit a said channel to a respective said ONU (110a, 110b) using a respective dedicated wavelength (λa, λb); an input channel switch (130a, 130b) associated with the or each WDM transceiver (115a, 115b) and arranged to selectively couple the input of the WDM transceiver to the multi-cast channels and the point-to-point channels (140,135); wherein the selected multi-cast or point-to-point channels are directly converted to the respective dedicated wavelength.
摘要翻译：本公开涉及波分复用（WDM）无源光网络（PON）以及从光线路发射机（OLT）到光网络单元（ONU）的点到点和广播或组播信道的传输。提供了一种WDM PON（100），包括：使用光纤网络（160）耦合到多个ONU（110a，110b）的OLT（105）; OLT（105）具有一个或多个WDM收发器（115a，115b），每个WDM收发器被布置成接收多播和点对点信道，并且其中所述或每个WDM收发器（115a，115b）被布置成将所述信道发送到相应的所述ONU（110a，110b）使用各自的专用波长（λa，φb）; 与所述或每个WDM收发器（115a，115b）相关联并被布置成选择性地将所述WDM收发器的输入耦合到所述多播信道和所述点对点信道（140,135）的输入信道交换机（130a，130b）。其中所选择的多播或点对点信道被直接转换成相应的专用波长。

5. 发明申请

WO2013007277A1 OPTICAL ACCESS NETWORK 审中-公开
标题翻译：光接入网络
公开(公告)号：WO2013007277A1
公开(公告)日：2013-01-17
申请号：PCT/EP2011/061621
申请日：2011-07-08
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CAVALIERE, Fabio , GIORGI, Luca , CIARAMELLA, Ernesto , PRESI, Marco
发明人： CAVALIERE, Fabio , GIORGI, Luca , CIARAMELLA, Ernesto , PRESI, Marco
IPC分类号： H04J14/02 , H04B10/26
CPC分类号： H04Q11/0067 , H04B10/272 , H04J14/02 , H04J14/0246 , H04J14/025 , H04J14/0282 , H04J2014/0253 , H04L27/0008 , H04Q2011/0016 , H04Q2011/0086
摘要： An optical access network (5) comprises an optical line terminal (10) and an optical network unit (20) having a transmitter (24). An optical path (11, 12, 14, 15) connects an output of the transmitter (24) of the optical network unit (20) to the optical line terminal (10). The transmitter (24) of the optical network unit (20) is arranged to transmit an upstream signal (40) with an amplitude modulation format having at least one level transition per data bit period for at least one of the logical bits and a frequency modulation occurring with the level transition. An optical filter (16, 18, 31, 34) is positioned in the optical path. A central wavelength of a response (51) of the optical filter (16, 18, 31, 34) has an offset (53) with respect to a wavelength (41) of the upstream signal (40). The wavelength (41) of the upstream signal (40) is located on a slope (54) of the response (51) of the optical filter.
摘要翻译：光接入网络（5）包括光线路终端（10）和具有发射机（24）的光网络单元（20）。光路（11,12,14,15）将光网络单元（20）的发射机（24）的输出与光线路终端（10）连接起来。光网络单元（20）的发射机（24）被布置成以对于至少一个逻辑比特和频率调制的每个数据比特周期具有至少一个电平转换的幅度调制格式来发送上行信号（40）发生与水平转换。光学滤光器（16,18,31,34）位于光路中。滤光器（16,18,31,34）的响应（51）的中心波长相对于上游信号（40）的波长（41）具有偏移（53）。上游信号（40）的波长（41）位于滤光器的响应（51）的斜率（54）上。

6. 发明申请

WO2012143046A1 PASSIVE OPTICAL NETWORK OPTICAL NETWORK TERMINAL APPARATUS AND CONFIGURATION METHOD 审中-公开
标题翻译：被动光网络光网络终端设备和配置方法
公开(公告)号：WO2012143046A1
公开(公告)日：2012-10-26
申请号：PCT/EP2011/056320
申请日：2011-04-20
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , GIORGI, Luca , CAVALIERE, Fabio
发明人： GIORGI, Luca , CAVALIERE, Fabio
IPC分类号： H04J14/02
CPC分类号： H04J14/0227 , H04J14/0246 , H04J14/025 , H04J14/0258 , H04J14/0267 , H04J14/0269 , H04J14/0282 , H04J14/0293
摘要： A method (10) of configuring an optical network terminal, ONT, of a wavelength division multiplexed passive optical network, WDM PON, the method comprising: a. sequentially setting a transmission wavelength of a tunable optical filter at the ONT to one or more wavelengths of a pre-selected plurality of transmission wavelengths until a wavelength is identified for which no downstream optical signal from an optical line terminal of the WDM PON is detected (12); b. determining whether a transmitter operable at said identified transmission wavelength is present at the OLT and is available to be assigned to communicate with the ONT (14); c. if a transmitter is determined to be present and available, maintaining the transmission wavelength of the tunable optical filter at transmission wavelength (16) and assigning the ONT to the OLT as a subscriber at said identified transmission wavelength (18); and d. if a transmitter is determined to be one of not present and not available, recommencing the method at step a. for one or more further wavelengths of said pre-selected plurality of wavelengths (20).
摘要翻译：一种配置波分复用无源光网络WDM PON的光网络终端ONT的方法（10），所述方法包括：a。顺序地将ONT处的可调谐滤光器的透射波长设置为预先选择的多个透射波长的一个或多个波长，直到识别出没有检测到来自WDM PON的光线路终端的下行光信号的波长（ 12）; 湾确定在所述OLT处是否存在以所述识别的传输波长可操作的发射机，并且可用于被分配为与所述ONT（14）通信; C。如果发射机被确定为存在并且可用，则保持可调光滤波器的传输波长处于传输波长（16）并且以所述识别的传输波长（18）将ONU作为用户分配给OLT; 和d。如果发射机被确定为不存在且不可用的发射机，则在步骤a重新开始该方法。对于所述预选择的多个波长（20）的一个或多个另外的波长。

7. 发明申请

WO2013037510A1 COMMUNICATIONS NETWORK APPARATUS AND LINE CODING METHOD 审中-公开
标题翻译：通信网络设备和线路编码方法
公开(公告)号：WO2013037510A1
公开(公告)日：2013-03-21
申请号：PCT/EP2012/056075
申请日：2012-04-03
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CAVALIERE, Fabio , GIORGI, Luca , DAHLFORT, Stefan
发明人： CAVALIERE, Fabio , GIORGI, Luca , DAHLFORT, Stefan
IPC分类号： H04L25/49
CPC分类号： H04L25/4902
摘要： Methods and apparatus for line coding in a communications network are described. According to one embodiment of the invention, downstream communications traffic bits are received and mapped into downstream bit positions of a transmission structure. A preselected bit in each upstream bit positions of the transmission structure is provided to form a downstream transmission structure. A downstream optical signal carrying the downstream transmission structure is generated for transmission. Upstream communications traffic bits are also received and mapped into the upstream bit positions of the transmission structure to form an upstream transmission structure. An upstream optical signal carrying the upstream transmission structure is generated for transmission.
摘要翻译：描述了通信网络中线路编码的方法和装置。根据本发明的一个实施例，下行通信业务比特被接收并映射到传输结构的下游比特位置。提供传输结构的每个上游位位置中的预选位以形成下行传输结构。产生携带下游传输结构的下行光信号用于传输。上行通信业务比特也被接收并映射到传输结构的上游比特位置，形成上行传输结构。产生携带上游传输结构的上行光信号用于传输。

8. 发明申请

WO2013056734A1 OPTICAL MODULATOR AND METHOD OF ENCODING COMMUNICATIONS TRAFFIC IN A MULTILEVEL MODULATION FORMAT 审中-公开
标题翻译：光学调制器和多通道调制格式的通信编码方法
公开(公告)号：WO2013056734A1
公开(公告)日：2013-04-25
申请号：PCT/EP2011/068268
申请日：2011-10-19
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , CAVALIERE, Fabio
发明人： CAVALIERE, Fabio
IPC分类号： H04B10/155
CPC分类号： H04B10/5561 , H04B10/5053
摘要： An optical modulator (10) comprising: an optical splitter (12) arranged to receive an optical carrier signal (14) and split it into sub-signals (16); modulation assemblies (18), each comprising a binary optical modulator (22) arranged to apply a binary phase shift keyed, BPSK, modulation to a respective optical sub-signal to form a BPSK modulated optical sub-signal. A plurality of the modulation assemblies (20) comprise a phase-shifter (24), each arranged to apply a respective phase shift to the respective BPSK modulated optical sub-signal in dependence on a pre-selected multilevel modulation format; encoding apparatus (26) arranged to receive communications traffic bits (28), to map each bit into a respective symbol, and to generate and transmit a respective drive signal to the optical modulator of a modulation assembly, each drive signal arranged to cause the optical modulator to apply said BPSK modulation, to encode the symbol onto the respective optical carrier sub-signal; an output (30); and a combiner (32) arranged to receive each BPSK modulated optical sub-signal and to deliver each sub-signal to the output, to form an output optical signal (34) having said multilevel modulation format.
摘要翻译：一种光调制器（10），包括：光分路器（12），布置成接收光载波信号（14）并将其分割成子信号（16）; 调制组件（18），每个调制组件（18）包括二进制光调制器（22），其布置成将二进制相移键控的BPSK调制应用于相应的光子信号以形成BPSK调制的光子信号。多个调制组件（20）包括移相器（24），每个移相器（24）被设置为根据预先选择的多电平调制格式将相应的相移施加到相应的BPSK调制的光子信号; 编码装置（26），被布置为接收通信业务位（28），将每个位映射到相应的符号，并且生成并将相应的驱动信号发送到调制组件的光调制器，每个驱动信号被布置成使光调制器来应用所述BPSK调制，将符号编码到相应的光载波子信号上; 输出（30）; 以及组合器（32），被布置成接收每个BPSK调制的光子信号并将每个子信号传送到输出端，以形成具有所述多电平调制格式的输出光信号（34）。

9. 发明申请

WO2013139367A1 WDM LINK FOR RADIO BASE STATION 审中-公开
标题翻译：用于无线电基站的WDM链路
公开(公告)号：WO2013139367A1
公开(公告)日：2013-09-26
申请号：PCT/EP2012/054810
申请日：2012-03-19
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , PONZINI, Filippo , CAVALIERE, Fabio
发明人： PONZINI, Filippo , CAVALIERE, Fabio
IPC分类号： H04B10/2575 , H04W88/08
CPC分类号： H04B10/25758 , H04B10/2575 , H04J14/02 , H04W88/085
摘要： A radio base station (10) has a baseband controller (20) coupled to a radio head (30) by an optical wavelength division multiplexed link to pass downlink signals on a first wavelength (100), and uplink signals on another wavelength (110). A compensating delay is applied to one of the signals to compensate for a difference in transmission times between the downlink and the uplink signals. The compensating delay can be controlled according to the difference in wavelengths. By compensating for such differences in transmission times, synchronisation problems can be avoided or ameliorated, or transmission distances can be increased. This can result in more flexibility in choice of wavelengths, fiber types and fiber lengths, and greater resilience. This can enable simpler installation or configuration, or reconfiguration without needing to take care to restrict the selection of wavelengths on the WDM link or restrict the length of the link for example.
摘要翻译：无线电基站（10）具有通过光波分复用链路耦合到无线电头（30）的基带控制器（20），以在第一波长（100）上传送下行链路信号，并且在另一波长（110）上传送上行链路信号，。对一个信号施加补偿延迟以补偿下行链路和上行链路信号之间的传输时间差。可以根据波长的差异来控制补偿延迟。通过补偿传输时间上的差异，可以避免或改善同步问题，或增加传输距离。这可以在选择波长，光纤类型和光纤长度以及更大的弹性方面产生更大的灵活性。这可以使得更简单的安装或配置或重新配置，而不需要注意限制WDM链路上的波长的选择或限制链路的长度。

10. 发明申请

WO2012163430A1 COMMUNICATIONS NETWORK TRANSPORT NODE, OPTICAL ADD-DROP MULTIPLEXER AND METHOD OF ROUTING COMMUNICATIONS TRAFFIC 审中-公开
标题翻译：通信网络运输节点，光学增益多路复用器和通信通信交通方式
公开(公告)号：WO2012163430A1
公开(公告)日：2012-12-06
申请号：PCT/EP2011/059201
申请日：2011-06-03
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , OLSSON, Bengt-Erik , CAVALIERE, Fabio , TESTA, Patrizia
发明人： OLSSON, Bengt-Erik , CAVALIERE, Fabio , TESTA, Patrizia
IPC分类号： H04J14/02 , H04Q11/00
CPC分类号： H04J14/0215 , H04J14/0202 , H04J14/0204 , H04J14/0212 , H04J14/0217 , H04J14/0257 , H04J14/0267 , H04Q11/0071
摘要： A communications network transport node 10 comprising an optical add-drop multiplexer (OADM) 12,comprising optical signal processing apparatus 16 and electrical signal routing apparatus 18, and a packet switch 14. Each optical signal processing apparatus 16 comprises an optical input 20, an optical output 22, optical-to-electrical (O-E) signal conversion apparatus 24, arranged to receive input optical channel signals and to convert each into an input radio frequency (RF) modulated electrical channel signal,and electrical to optical(E-O) signal conversion apparatus 26, arranged to receive output RF modulated electrical channel signals and to convert each into an output optical channel signal. The electrical signal routing apparatus 18 determines which input RF modulated electrical channel signals are to be dropped, and routes these to the electrical drop outputs, and which are to be transmitted, and routes these to a selected E-O apparatus 26. The routing apparatus 18 receives further electrical channel signals and routes these to a selected E-O apparatus 26. The packet switch 14 receives the input RF modulated electrical channel signals to be dropped and delivers further RF modulated electrical channel signals to the OADM 12.
摘要翻译：包括光分插复用器（OADM）12的通信网络传输节点10，包括光信号处理设备16和电信号路由设备18以及分组交换机14.每个光信号处理设备16包括光输入20，光输出22，光 - 电（OE）信号转换装置24，被布置成接收输入光信道信号并将其转换为输入射频（RF）调制电信道信号，以及电 - 光（EO）信号转换装置26，被布置成接收输出RF调制电信号信号并将其转换成输出光信道信号。电信号路由装置18确定哪个输入的RF调制电信号信号将被丢弃，并且将它们路由到电滴输出并将被发送，并将它们路由到所选择的EO装置26.路由装置18接收进一步的电通道信号并将它们路由到所选择的EO设备26.分组交换机14接收要丢弃的输入RF调制电信号信号，并将另外的RF调制电信道信号传送到OADM 12。

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